The Waukesha County District Attorney's Office is now leading the investigation in this case. Brookfield Square Mall sent the following statement about the incident to TODAY'S TMJ4:

We’d like to thank the City of Brookfield Police Department for their quick investigation and arrest of the individual responsible for the threat made to the center.

There was an increased security and police presence at the center yesterday due to the threat. As a result of the quick work of local authorities, we are returning to our standard operating procedures today. We will continue to work with authorities and evaluate our security protocol on an ongoing basis, making adjustments as necessary.

The suspect was not employed at the mall.

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